Question

Cine ma ajuta sa fac supunctele incercuite?PS:Este lectie de la geometrie,unghiuri opuse la varf.Va roggg am nevoie urgent!

Answer 1

a) x+2x =180 grade
3x=180 grade
x=180/3=60 grade
COD=AOB =x=60 grade
AOD =ROC =2x =120 grade
b) x+x+80 =180 grade
2x =100 grade
x=100/2 =50 grade 
COD =AOB =x=50 grade
BOc =AOD =x+80 =50+80=130 grade
c)  x+4x =180 grade
5x=180 grade 
x=180/5 =36 grade 
COD =AOB =x=36 grade
BOC =AOD =4x=144 grade
h)  OF =bisectoarea lui AOB 
AOB =2x28 =56 grade
AOB= COD = 56 grade

EOC este unghi drept 
EOC =90 grade
BOE =180-EOC -AOB =180-90-56=34 grade 
BOC =AOD =BOE +EOC = 34+90 =124 grade